Houston is at risk for catastrophic flooding, as Harvey is expected to drop 22 inches of rainfall, in addition to the already 24 inches of rainfall. Houston has a population of about 2.3 million people. (8/27 2:40 p.m. ET)

More than 250 roads have been closed around the affected areas in southeastern Texas. (8/27 2:50 p.m. ET)

A Houston police officer drowned Sunday after becoming trapped inside of his patrol car in the flooding. His body was not able to be recovered until Tuesday. (8/29 3:35 p.m. ET)

Several dams, levees, bridges, and highways in and around the Houston area are beginning to fail. Officials say that the death toll is expected to skyrocket once floodwaters recede, as they have not been able to retrieve many bodies as of yet. (8/29 3:47 p.m. ET)

NBC News reports that a US Admiral has ordered the USS Oak Hill and the USS Kearsarge to provide relief for Harvey along the gulf coast. (8/30 6:25 p.m. ET)

ABC13 Houston reports that mandatory evacuations are underway for residents near the Addicks and Barker- Cypress reservoirs, citing public safety as the main concern. Homes in the area are expected to be inundated for another two weeks. (9/2 6:46 p.m. ET)